1.  21:09:22.221 [MessageBroker-3] INFO  c.t.s.s.impl.StockNewsServiceImpl - [2017-12-16 21:09:22] execute fetch stock news, result = 0
  2.  21:09:32.158 [MessageBroker-2] INFO  c.t.s.s.impl.StockNewsServiceImpl - [2017-12-16 21:09:32] execute fetch stock news, result = 0
  3.  21:09:42.180 [MessageBroker-2] INFO  c.t.s.s.impl.StockNewsServiceImpl - [2017-12-16 21:09:42] execute fetch stock news, result = 0
  4.  org.springframework.web.socket.sockjs.SockJsException: Uncaught failure in SockJS request, uri=http://localhost:8080/thinkvenus-websocket/482/g1y5fw42/websocket; nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: WebSocket handshake failure; nested exception is java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to javax.websocket.server.ServerContainer
  5.      at org.springframework.web.socket.sockjs.support.SockJsHttpRequestHandler.handleRequest(SockJsHttpRequestHandler.java:135)
  6.      at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:51)
  7.      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
  8.      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
  9.      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
  10.      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
  11.      at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
  12.      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
  13.      at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
  14.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
  15.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  16.      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
  17.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  18.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  19.      at org.springframework.web.servlet.resource.ResourceUrlEncodingFilter.doFilter(ResourceUrlEncodingFilter.java:59)
  20.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  21.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  22.      at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
  23.      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  24.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  25.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  26.      at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)
  27.      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  28.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  29.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  30.      at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
  31.      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  32.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  33.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  34.      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
  35.      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  36.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  37.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  38.      at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:115)
  39.      at org.springframework.boot.web.support.ErrorPageFilter.access$000(ErrorPageFilter.java:59)
  40.      at org.springframework.boot.web.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:90)
  41.  **********************异常开始**********************
  42.      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  43.      at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:108)
  44.  **********************异常结束**********************
  45.  
  46.      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  47.      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  48.      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
  49.      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
  50.      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
  51.      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
  52.      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
  53.      at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
  54.      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
  55.      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
  56.      at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)
  57.      at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
  58.      at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2549)
  59.      at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2538)
  60.      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  61.      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  62.      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
  63.      at java.lang.Thread.run(Thread.java:748)
  64.  Caused by: org.springframework.web.socket.sockjs.SockJsTransportFailureException: WebSocket handshake failure; nested exception is java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to javax.websocket.server.ServerContainer
  65.      at org.springframework.web.socket.sockjs.transport.handler.WebSocketTransportHandler.handleRequest(WebSocketTransportHandler.java:127)
  66.      at org.springframework.web.socket.sockjs.transport.TransportHandlingSockJsService.handleTransportRequest(TransportHandlingSockJsService.java:312)
  67.      at org.springframework.web.socket.sockjs.support.AbstractSockJsService.handleRequest(AbstractSockJsService.java:433)
  68.      at org.springframework.web.socket.sockjs.support.SockJsHttpRequestHandler.handleRequest(SockJsHttpRequestHandler.java:132)
  69.      ... 55 more
  70.  Caused by: java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to javax.websocket.server.ServerContainer
  71.      at org.springframework.web.socket.server.standard.AbstractStandardUpgradeStrategy.getContainer(AbstractStandardUpgradeStrategy.java:67)
  72.      at org.springframework.web.socket.server.standard.TomcatRequestUpgradeStrategy.getContainer(TomcatRequestUpgradeStrategy.java:84)
  73.      at org.springframework.web.socket.server.standard.TomcatRequestUpgradeStrategy.getContainer(TomcatRequestUpgradeStrategy.java:47)
  74.      at org.springframework.web.socket.server.standard.AbstractStandardUpgradeStrategy.getSupportedExtensions(AbstractStandardUpgradeStrategy.java:88)
  75.      at org.springframework.web.socket.server.support.AbstractHandshakeHandler.doHandshake(AbstractHandshakeHandler.java:272)
  76.      at org.springframework.web.socket.sockjs.transport.handler.WebSocketTransportHandler.handleRequest(WebSocketTransportHandler.java:123)
  77.      ... 58 more
  78.  21:09:52.177 [MessageBroker-4] INFO  c.t.s.s.impl.StockNewsServiceImpl - [2017-12-16 21:09:52] execute fetch stock news, result = 0

在stackflow上看到的解决方案：

https://samebug.io/exceptions/173734/java.lang.ClassCastException/orgapachetomcatwebsocketserverwsservercontainer

https://stackoverflow.com/questions/28348686/tomcat-8-and-websocket

Maven:

  1. <dependency>
  2.     <groupId>javax.websocket</groupId>
  3.     <artifactId>javax.websocket-api</artifactId>
  4.     <version>1.0</version>
  5.     <scope>provided</scope>
  6. </dependency>
  7.  
  8. Gradle:
  1. providedCompile("javax.websocket:javax.websocket-api:1.1")

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